1. Research Coordinator, Society for Health and Demographic Surveillance, Suri, Birbhum, West Bengal, India
2. Senior Medical Officer, Chest Clinic, District Tuberculosis Centre, District Hospital of Birbhum, Suri, Birbhum, West Bengal, India
3. Senior Research Scientist, Society for Health and Demographic Surveillance, Suri, West Bengal, India
4. Survey Manager, Society for Health and Demographic Surveillance, Suri, Birbhum, West Bengal, India
5. Data Manager, Society for Health and Demographic Surveillance, Suri, Birbhum, West Bengal, India
6. Project Director, Society for Health and Demographic Surveillance, Suri, Birbhum, West Bengal, India
7. Professor & Head, Department of Hepatology, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education & Research (IPGMER), Kolkata, West Bengal, India